SEW 555 X14CrMoVNbN10-1 Quenched & Tempered Steel – High‑Performance Turbine & Generator Components
The high temperature alloy steel X14CrMoVNbN10-1 is used for larger preshaped components in the quenched and tempered condition in turbine and generator installations, in particular as shafts and discs. The steel is weldable if the relevant measures required are observed.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 220 GPa | Typical for Martensitic Stainless Steel |
Elongation, transverse | 20.0 °C | 13 - 15 % | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Martensitic Stainless Steel |
Reduction of area, transverse | 20.0 °C | 40 % | |
Shear modulus | 23.0 °C | 77 GPa | Typical for Martensitic Stainless Steel |
Tensile strength, transverse | 20.0 °C | 700 - 950 MPa | |
Yield strength Rp0.2 | 100.0 °C | 555 - 695 MPa | |
200.0 °C | 525 - 625 MPa | ||
250.0 °C | 515 - 610 MPa | ||
300.0 °C | 505 - 595 MPa | ||
350.0 °C | 495 - 575 MPa | ||
400.0 °C | 475 - 555 MPa | ||
450.0 °C | 445 - 525 MPa | ||
500.0 °C | 405 - 485 MPa | ||
550.0 °C | 345 - 425 MPa | ||
600.0 °C | 270 - 345 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 600 - 700 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1E-5 - 1.5E-5 1/K | Typical for Martensitic Stainless Steel |
Melting point | 1370 - 1530 °C | Typical for Martensitic Stainless Steel | |
Specific heat capacity | 23.0 °C | 460 J/(kg·K) | Typical for Martensitic Stainless Steel |
Thermal conductivity | 23.0 °C | 14 - 31 W/(m·K) | Typical for Martensitic Stainless Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 6E-7 Ω·m | Typical for Martensitic Stainless Steel |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.012 % |
Carbon | 0.11 - 0.16 % |
Chromium | 10 - 11 % |
Manganese | 0.4 - 0.6 % |
Molybdenum | 1.4 - 1.6 % |
Nickel | 0.5 - 0.7 % |
Niobium | 0.04 - 0.06 % |
Nitrogen | 0.04 - 0.06 % |
Phosphorus | 0.02 % |
Silicon | 0.1 % |
Sulfur | 7E-3 % |
Vanadium | 0.15 - 0.25 % |
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